{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["protein", "cell type", "RNA", "cell line", "DNA"], "input": "Recent development of primary cultures of human megakaryocytes and the molecular cloning of genes that are specific to this lineage offer the possibility of getting some insights into the genetic mechanisms that control megakaryocytopoiesis ."}
{"protein": [], "cell type": [], "RNA": [], "cell line": ["primary cultures", "human megakaryocytes"], "DNA": []}